Added support for the changes to the transform component in 2021.2 or higher.

Store Listing Changes

• Updated the store description to better explain the asset and its usage.
• Updated the store graphics to fit the new style we have made for our assets.

Asset Changes

• Added support for the 2021.2 scale constrain toggle with a scripting define.
• Made some minor changes to the asset backend.
• Updated documentation & changelog to match the new style.

Full change log can be viewed in the asset files.